import java.io.*;
public class Example10_6 {
	public static void main(String args[]) {
		File sourceFile = new File("a.txt");  //读取的文件
		File targetFile = new File("b.txt");  //写入的文件
		char c[] =new char[19];               //char型数组 
		try{  
			Writer out = new FileWriter(targetFile,true); //指向目的地的输出流
			Reader in  = new FileReader(sourceFile);   //指向源的输入流  
			int n = -1;
			while((n=in.read(c))!=-1) {
				out.write(c,0,n);
			}
			out.flush();
			out.close();
		}
		catch(IOException e) {
			System.out.println("Error "+e);
		}
	}
}
